(DOCSP-45695) [C2C] Add banner that mongosync is not supported with non-genuine MongoDB (#523)

* (DOCSP-45695) Add banner.

* (DOCSP-45695) Add banner to mongosync page.

* (DOCSP-45695) Adding banner to about-mongosync.

Author: elyse-mdb

snooty.toml

@@ -42,3 +42,14 @@ c2c-product-name = "Cluster-to-Cluster Sync"
 version = "{+version+}"
 version-dev = "{+version-dev+}"
 
+[[banners]]
+# Warning for non-genuine deployment usage with tool binaries.
+targets = [
+        "index.txt",
+        "about-mongosync.txt",
+        "mongosync.txt"
+        ]
+variant = "warning"
+value = """\
+        MongoDB Command Line Database Tool binaries are not supported or tested for use with non-genuine MongoDB deployments. While the tools may work on these deployments, compatibility is not guaranteed.
+        """